Pump.



No. 707,247, PATENTBD APR. 11, 1005. P. R. WILSON 0 0. MANSELL.

PUMP.

APPLIGATION FILED 111111.17. 1900. 3111131171111 00T 10.1904.

rammed April 11, 1905.

'UNTTED STATES PATENT @einen l `h..-\Nl{ ROBE {TSON lVlLSON ANDtrllORl-HC MANSELL, OF LLANO, TEXAS.

PUMP.

SPECIFICATION forming part of Letters Patent No. 787,247, dated April11, 1905.

Application iled March 17,190()` Renewed October 10,1904. Serial No.227,911.

[o [Nm/nf if muy coltre/'1b.'

Be it known that we, FRANK ROBERTSON lYusox and (iconen Mxxsmir.,citizens of the ifnited States, residing at Llano, in the county ofLlano and State of Texas, have invented a new and useful Pump, of whichthe following is a specilication.

(iur invention relates to improvements in pumps; and the object that wehave in view is to provide au improved construction which operatessulliciently to quicklylift the water from a well or other source ofsupply to the surface of the ground, the several parts of the pump beingsimple in construction and readily separable for the purpose of accessthereto l'or repairing any of the worn parts.

Further objects and advantages of the invention appear in the course ofthe subjoined description` and the novelty in the combination andconstruction of parts wih be pointed out iu the claim.

ln the drawings, Figure l is a central vertical section of the improvedpump embodying our invention. Fig. 2 is a perspective view of one of thetubular piston-buckets detached from the pump-casing. Fig. 3 is anenlarged sectional view through the lazytongs mechanism, which connectsthe upper' piston-biu-ket with the lower piston-bucket for the purposeof operating one bucket by the movement of the other bucket. Fig. JL isa view showing the cap and lever detached and the casing extended.

'lhe same numerals of reference are used to indicate like andcorresponding parts in each of the several ligures of the drawings.

len carrying the invention into practice we employ a pump-casing l0,which is of peculiar construction, for the accommodation of a scries ofvalved piston-buckets and a lazytongs mechanism which is arranged tooperatively connect the series of piston-buckets for the purpose ofpositively reciprocating the lower bucket by the movement of the upperbucket. This pump-casing is provided with the tubular lengths l1 l2,which are arranged in vertical alinement with each other and areconnected by an intermediate expanded section 13. The tubular lengths l1l2 of the pump-casing constitute the working barrels or cylinders of thepum p; but the expanded section 173 of said casing is of double conicalshape in vertical section, so as to provide a chamber the diameter ofwhich at all points exceeds that of the tubular lengths or workingbarrels of the pump. It is evident that this pump-casing may be made insections of proper shape and size and provided with means for couplingthe same securely one to the other, whereby the casing may be made ofany suitable length, according to the depth of a well; but, if desired,the casing may constitute a single continuous casting, as may be foundmost expedient by the skilled constructor.

lVe have shown the pump as equipped with an upper piston-bucket l-l anda lower piston-bucket A15, operatively [itted in the working barrels l ll2, respectively, and these piston-buckets are connected one with theother by means of an intermediate lazy-tongs mechanism, which isindicated in its entirety by the numeral 1G and is housed or containedwithin the chamber of the expanded section 12% ofthe pump-easing. Eachpiston-bucket is preferably tubular in form and of a diameter to litsnugly within its proper working barrel. At the lower end of each bucketis provided a valve-seat 17, which accommodates a check-valve 1S, thatis adapted to occupy the seat on the upward movement of the bucket, saidcheck-valve being automatically unseated on the downstroke of thepiston-bucket and held against undue movement with relation to thevalve-seat by means of the stops 1), which project from the inside ofthe piston-bucket. Each bucket is, furthermore, provided at its upperend with a valve-seat 20, adapted to accommodate a check-valve 2l, whichis opened on the downward movement of the bucket and closes on theupward movement thereof, and the piston-bucket is, furthermore, providedat its upper end with a valve-cage 22, the saine being of skeleton formand secured lirmly to the bucket so as to surround the valve 2l for thepurpose of limiting the Inoveinent of the latter with relation to theseat 20 and the upper end of the bucket. In the drawings we have shownthe piston-buckets working barrel 11 thereof.

as provided with check-valves, which are spherical or ball-shaped; butit is to be understood that we do not limit ourselves to this particulartype of check-valves.

The upper end of the pump-casing is provided with a cap 23, which isscrewed detachably on said casing to close the upper This cap isprovided with a central vertical opening 24, through which passes apitman 25, the latter being connected at its lower end pivotally to theapex of the valve-cage 22. The upper end of this pitman is pivoted to asuitable operating appliance, which is shown in the drawings in the formofa lever 26, the same being fulcrumed at a point intermediate of itslength to an offstanding arm or bracket 27, which is fast to the upperend of the pump-casing. Any suitable means may be substituted for thelever as a means for reciprocating the connected piston-buckets of ourimproved pump.

The upper end of the pump-casing 10 is provided at a point below the cap23 with a discharge-spout 28, the same having a suitable cock 29 to cutoff the flow of water from the pump.

One of the important features of our invention resides in the employmentof the lazy-tongs mechanism 16 between the series of piston-bucketswhich are employed for the elevation of the water. The upperpiston-bucket 14 of the improved pump is provided at its lower end witha hanger 30, consisting of a pair of arms arranged in inclinedpositions, so as to meet or join one another, and are firmly secured tothe lower end of the piston-bucket 14 in a way to avoid interference tothe free ingress of water through the lower` valve 18 to said bucket 14.A pitman 31 is attached at its upper end to the apex of this hanger, andthe lower end of this pitman is connected pivotally to a pair of links32, the latter arranged in divergent relation and having their lowerends pivoted individually to the upper ends of a pair of crossing levers33. These levers are fulcrumed at the middle thereof on a cross-bolt 34,which is supported removably in the middle portion of the expandedsection 13 of the pump-casing, and said levers are connected at theirlower ends pivotally to another pair of links, 35, which converge towardtheir lower ends and are pivoted at a common point to an arm 36, whichis provided on the valve-cage 22 of the lower piston-bucket 15.

The crossed levers 33 and the two pairs of links 32 35 constitute thetoggle mechanism which serves as the means for operatively connectingthe upper and lower pistonbuckets of the pump, and this toggle mechanismis adapted to be expanded or opened on the downward movement of theupper piston-bucket 14 for the purpose of raising the lowerpiston-bucket 15 simultaneously with such downward movement of the upperpiston-bucket, and vice versa. An upward movement of the piston-bucket14 operates to contract or draw together the members of the togglemechanism for the purpose of positively forcing the piston-bucket 15 ina downward direction. lt is therefore to be understood that the powernecessary for the operation of the pump is applied to the upperpiston-bucket and that the toggle mechanism transmits the motion of theupper piston-bucket to the lower piston-bucket in a manner to move thelatter in an opposite direction to and simultaneously with the movementof said upper piston-bucket.

The pump-casing 10 may be extended any suitable distance below theworking barrel or cylinder 12, oran induction-pipe 37 may be connectedwith said lower working barrel,

said induction-pipe being immersed in the water of the well or othersource of supply. A foot-valve 38 of any suitable character may beprovided between the induction-pipe and the .lower working barrel 12,said valve serving to sustain the weight of the column of watercontained within the pump, and thereby relieve the strain on the lowerpistonbucket. Below the valve 38 is arranged a strainer 39, and asimilar strainer 40 may be attached to the lower end of the pistonbucket15. A drain-cock 41 is attached to the lower portion of the pump-casingat a point above the foot-valve 38, said valve being operable by anysuitable means for the purpose of draining water from the casing in verycold weather, and thereby minimizing the liability of the pump freezing.

In operation the water is supplied to the lower working barrel by theinduction-pipe, and the upward flow of the water unseats the valves 1821, so as to ill the lower pistonbucket 15. The upward movement of thispiston-bucket closes the valves 18 21, so as to lift the water containedwithin the bucket and to force upwardly any water in the pump-barrelabove the valve 21. On the downstroke of the piston-bucket both of thevalves are unseated, and the water is free to flow out of the bucket andinto the pumpeasing above the piston-bucket. The upper piston-bucket hasits valves arranged to operate in a like manner for the water containedin the chamber of the expanded casing-section 13 to enter the barrel andalso be received in the piston-bucket 14 on the downward movementthereof. On the upward movement of this piston-bucket 14 the water isdischarged into the working barrel 11 of the casing above thepiston-bucket 14, so that on the next upward stroke of this bucket 14the water is ejected from the pump through the discharge-spout 28.

In Fig. 4 is shown the preferred manner of extending the pipe or casingto any desired height. The lever 26 is disengaged from the pitnian andthe cap 24 is unscrewed. A pipe 42 is connected to the section ll by asuitable coupling JESS, and an operating-rod il is connected to the endof the pitinan 25. This pipe may be extended to any height desired andthe cap fixed thereoni The lever 26 is then connected to the rod 44*From the foregoing description it is apparent that the connectedpiston-buckets work in unison for the elevation of the water through thepump-casing, and the water lifted by the lower bucket is received intoand lifted on the upstroke of the upper bucket. The expandedcasing-section 13 provides for the proper movement or play of thelazy-tongs mechanism which transmits the motion Yfrom one bucket to theother. By having the fulcrum-bolt 34 supported removably within theexpanded casing-section the piston-buckets and the lazy-tongs mechanismmay be withdrawn endwise from the casing on the removal of the cap 23,thus permitting access to be obtained to any of the working parts of thepump for repairing and renewing the same.

Changes within the scope o'f the appended claim may be made in the formand proportion of some of the parts, while their essential features areretained and the spirit of the invention is embodied. Hence We do notdesire to be limited to the precise form of all the parts as shown,reserving the right to var;Y therefrom.

llaving thus described the invention, what we claim is4 A pump having incombination a straight single casing only, comprising an upper tnbularsection, a lower tubular section alined longitudinally therewith, and anintermediate expanded section connecting the tubular sections, the lowersection having a discharge connection with the expanded section only,and the upper section having an inlet connection with the expandedsection only, a removable `fulcrum-lwlt piercing the sides of theexpanded section at its point of' greatest width, a lazy-tongs devicelocated in the expanded section and fulcrunied upon the bolt, valvedplungers working in the respective upper and lower casing-sections andconnected to the respective upper and lower ends of the lazy-tongsdevice, a cap closing the upper end of the casing and provided with anopening in its top, an operating-lever fulcrumed upon the upper end ofthe casing, a rod connecting the lever with the upper' plunger andworking through the opening in the cap, an outlet `for the casingdisposed between the top thereof and the upper limit of the upperplunger, an inlet check-valve at the lower end of the casing, and adrain-valve in the casing between the lower plunger and the inlet-valve.

In testimony that we claim the 'foregoing as our own we have heretoal'lixed our signatures in the presence of two witnesses.

FRANK ROBERTSON VILSON.

GEORGE MANSELL.

Wvitnesses:

E. l. DARDEN.

